201061553 has 48 divisors (see below), whose sum is σ = 278251200. Its totient is φ = 143095680.

The previous prime is 201061543. The next prime is 201061583. The reversal of 201061553 is 355160102.

It is not a de Polignac number, because 201061553 - 2⁸ = 201061297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201061543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296651 + ... + 297327.

It is an arithmetic number, because the mean of its divisors is an integer number (5796900).

Almost surely, 2^201061553 is an apocalyptic number.

It is an amenable number.

201061553 is a deficient number, since it is larger than the sum of its proper divisors (77189647).

201061553 is a wasteful number, since it uses less digits than its factorization.

201061553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 201061553 is about 14179.6175195243. The cubic root of 201061553 is about 585.8363890331.

The spelling of 201061553 in words is "two hundred one million, sixty-one thousand, five hundred fifty-three".